Herbicidal activity of 2-substituted 1,3,4-(2H)-isoquinolinetriones
作者:Marco Mazza、Tiziana Modena
DOI:10.1016/s0014-827x(99)00037-3
日期:1999.6
A series of 2-substituted 1,3,4-isoquinolinetriones (B) 1-15, precursors of the phthalamic acids and of the 1,3-dihydro-1-hydroxy-3-oxo-1-isobenzofurancarboxamides (F), possessing root antigravitropic activities, were prepared and evaluated for herbicidal activity on weeds and crops. Among the compounds examined, several derivatives were very active against weeds, in many cases more active than the commercially available herbicides used as the reference standards. Phytotoxicities on crops, selectivity and persistence of herbicidal effect were observed. (C) 1999 Elsevier Science S.A. All rights reserved.
Modena, T.; Azzolina, O.; Genta, I., Il Farmaco, 1989, vol. 44, # 7-8, p. 721 - 730
作者:Modena, T.、Azzolina, O.、Genta, I.、Mazza, M.
DOI:——
日期:——
MODENA, T.;AZZOLINA, O.;GENTA, I.;MAZZA, M., FARMACO, 44,(1989) N-8, C. 721-729
作者:MODENA, T.、AZZOLINA, O.、GENTA, I.、MAZZA, M.
DOI:——
日期:——
Superelectrophiles in Synthesis: Preparation of Aromatic Imides
作者:Sean H. Kennedy、Mark N. Schaeff、Douglas A. Klumpp
DOI:10.1021/acs.joc.9b01437
日期:2019.11.1
Aromatic carboxylic acids are found to undergo reactions with isocyanates, wherein triflic acid promotes the formation of aromatic imide products in fair to good yields. It is proposed that the carboxylic acid group directs the isocyanate electrophile to the ortho-position. This is thought to occur by the formation of a temporary carbamic acid anhydride group, which cleaves upon ortho-functionalization
α-Diazo homophotalimides were reacted with various propiolicacids on Rh2(esp)2 catalysis. The resulting propiolate esters were transformed into novel, heterocyclic Δα,β-spirobutenolides in good to excellent product yields. The approach represents a fundamentally novel entry into natural-like Δα,β-spirobutenolides present in many biologically active natural products as well as fully synthetic compounds